I Can’t Start My Mac
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I press the power button, and nothing happens. My Mac won't start.
When I turn on my Mac I see a blinking question mark or hear repeating beeps.
I turn on my Mac and see a blinking prohibitory symbol or blinking folder.
When I start up my Mac it stays on a blue screen and never shows the desktop.
What is a “Safe Boot” and how do I use it?
How do I reset the Power Manager (PMU) or System Management Controller (SMC)?